Cartridge Type Heater

Cartridge Type Heater

The typical structure of single head electric heating tube is the same as that of electric heating tube. It is generally composed of five parts: insulator, sealing material, lead out rod, filler, electric heating wire, metal protective sleeve and terminal. The spiral electric heating wire and the leading out side are located in the center of the metal protective sleeve. Its manufacturing process is to thread the spiral electric heating wire into the seamless steel pipe, copper pipe or aluminum pipe, and the gap is evenly filled with insulating and thermally conductive oxidizing medium, such as crystalline magnesia powder (alumina or clean quartz sand can also be used). Then use the pipe shrinking machine to narrow the pipe diameter to make the oxide medium dense (the density reaches more than 3.3g/cm3), so as to ensure that the electric heating wire is isolated from the air, and the central position does not deviate and touch the pipe wall. So. The calorific value per unit area can be increased by more than ten times. The service life can also be correspondingly increased to more than 10 years. Compared with the electric heating element with the same large heat, the tubular electric heating tube can save 5% of electric heating materials, and the thermal efficiency can reach more than 90%.
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